Abstract:
This study aims at investigating the difficulties encountered by EFL learners in producing English vowel sounds. The research used two tools for data collection, a questionnaire administrated for a number of 20 university teachers and a test administrated for number 50 students from Sudan University of Science and Technology 3rd year students at SUST The results of this study revealed that, there are some difficulties which encounter learners in pronouncing English vowel sounds, because they have more than one way of pronouncing them as well as the mother tongue interference, and the differences in the sounds system. The researcher recommends that special attention should be paid to the use the audio and audiovisual aid, especially language laboratories, will help in solving the difficulties encountered by the learners in pronouncing vowel sounds.
